-16- 
Anopheles maculipennis Meig. 
Roman and Netien ( 243 ) in 1939 reported tests "dth derris 
ponder and rotenone «n mosquito larvae: Anopheles maculipennis 
Meig., Culex hortensis Fie, and Culex pjpiens L. The po-ders 
vere scattered, without moistening, over the surface of the 
water containing the larvae. Rotenone is especially toxic 
'•'hen in^estc-d by larvae. 
Anopheles pseudopunctipennis Theob. 
Wille et al. (322) in 1937 reported that in preliminary 
tests cube root containing 5 percent of rotenone had no effect 
on the larvae after 15 hours when used at a concentration that 
killed fish in 30 minutes. 
A nopheles subp ictus Grassi 
See Wats and- Singh ( 308 ) under Anopheles annularis V. d. 
Wulp. on page 15, and West and Russell ( 315 ) under A. hyr-.anus 
var. sinensis (Tied.) on page 15. 
Anopheles sp. 
Strickland ( 265 ) in 1913 reported that derris was being 
tried for killing anopheline larvae in Malaya. 
West and Russell ( 314 ) in 1932 reported the results of 
tests of larvicides for anopheline mosouitqes in the Philip- 
nines. The action of mixtures of paris green with various 
materials partly adsorbed on charcoal '"fre tested on mosouito 
larvae. Paris green, 0.2-percent concentration, ^ith rotenone 
hydrobromide, 0.4-percent concentration, killed 76 percent of 
the larvae at the end of -24 hours. A mixture of 0.05 percent 
of paris green, 0.1 percent of arsenic trioxide, 0.1 percent 
of derris root, and 0.3 percent of borax killed 22 percent of 
the larvae, and a. mixture of 0.05 percent of paris green, 0.1 
percent of arsenic trioxide, 0.2 percent of derris root, and 
0.3 percent of borax killed 84 percent of the larvae, at the 
end of 24 hours. 
According to Van der Laan ( 166 ) in 1936, this species ^as 
somewhat sensitive to derris* 
C orethra sp. 
Danneel ( 66 ) in 1933 reported that Corethra larvae were 
uninjured after 24 hours in solutions of rotenone of 0.001- 
percent concentration (10 p. p.m.). 
